Fixes #162: Added function create_event_timeline

[OlgaKogiou]

In DFAnalyzerPlots added create_event_timeline function which takes a df as argument and shows a timeline of start-end per pid.

[OlgaKogiou]

Fixes #162

[hariharan-devarajan]

@OlgaKogiou Could u add a screenshot of the plot here.

[OlgaKogiou]

PID --> the process
Time (seconds) --> PID's duration. Do we want to present all I/O events her process? Or just the duration of the process?

[hariharan-devarajan]

PID --> the process Time (seconds) --> PID's duration. Do we want to present all I/O events her process? Or just the duration of the process?

I think both.

1. First usecase is to show process timeline using smallest ts and largest (ts + dur) within a combination of hostname and pid
2. Second usecase is to show events using ts and ts+dur .

[OlgaKogiou]

I got it. Thank you for clarifying. I will it and add a screenshot here again.

[hariharan-devarajan]

@OlgaKogiou was this addressed? I dont see the commit?

[OlgaKogiou]

I must have forgot :( I will do it this week @hariharan-devarajan